#!/bin/bash

#=================================================
# GENERIC START
#=================================================
# IMPORT GENERIC HELPERS
#=================================================

source _common.sh
source ynh_package_version
source ynh_systemd_action
source /usr/share/yunohost/helpers

#=================================================
# LOAD SETTINGS
#=================================================
ynh_print_info "Loading installation settings..."

app=$YNH_APP_INSTANCE_NAME

domain=$(ynh_app_setting_get $app domain)
path_url=$(ynh_app_setting_get $app path)
is_public=$(ynh_app_setting_get $app is_public)
final_path=$(ynh_app_setting_get $app final_path)
db_name=$(ynh_app_setting_get $app db_name)
port=$(ynh_app_setting_get $app port)

if [ -z "$db_name" ]
then
    db_name=$app
    ynh_app_setting_set "$app" db_name "$db_name"
fi

#=================================================
# CHECK VERSION
#=================================================

abort_if_up_to_date
# previous function is what defines 'version', more precisely the 'previous version'
previous_version="${version}"

#=================================================
# BACKUP BEFORE UPGRADE THEN ACTIVE TRAP
#=================================================
ynh_print_info "Backing up the app before upgrading (may take a while)..."

# Backup the current version of the app
ynh_backup_before_upgrade
ynh_clean_setup () {
	# restore it if the upgrade fails
	ynh_restore_upgradebackup
}
# Exit if an error occurs during the execution of the script
ynh_abort_if_errors

#=================================================
# ENSURE DOWNWARD COMPATIBILITY
#=================================================
ynh_print_info "Ensuring downward compatibility..."

if ynh_version_gt "0.45-2" "${previous_version}" ; then
    ynh_replace_string "Environment=ROOT_URL=http://127.0.0.1:$port$path_url" "Environment=ROOT_URL=https://$domain$path_url/" "/etc/systemd/system/$app.service"
    systemctl daemon-reload
fi

if ynh_version_gt "0.45-3" "${previous_version}" ; then
    yunohost service add $app
fi

if ynh_version_gt "0.77-2" "${previous_version}" ; then
    ynh_remove_nodejs
    ynh_install_nodejs 8.15.1
    ynh_use_nodejs
    # Create a dedicated systemd config
    ynh_replace_string "__NODEJS_PATH__" "$nodejs_path" "../conf/systemd.service"
    ynh_add_systemd_config
    # Create a dedicated .env config
    ynh_backup_if_checksum_is_different "$final_path/.env"
    cp "../conf/.env" "$final_path/.env"
    ynh_replace_string "__NODEJS_PATH__" "$nodejs_path" "$final_path/.env"
    ynh_replace_string "__DB_NAME__" "$db_name" "$final_path/.env"
    ynh_replace_string "__DOMAIN_URI__" "$domain$path_url" "$final_path/.env"
    ynh_replace_string "__PORT__" "$port" "$final_path/.env"
    ynh_store_file_checksum "$final_path/.env"
fi

if ynh_version_gt "1.07~ynh2" "${previous_version}" ; then

   # Replace mongodb packages
   # Assume no other app needs it >.>
   rm -f /etc/apt/sources.list.d/mongodb-org-3.2.list
   ynh_remove_app_dependencies
   ynh_install_app_dependencies "mongodb mongodb-server"
   yunohost service remove mongod
   yunohost service add mongodb --log "/var/log/mongodb/mongodb.log"
   ynh_use_nodejs

   # Gotta regen the systemd config because mongodb service name changed
   ynh_replace_string "__ENV_PATH__" "$nodejs_path"               "../conf/systemd.service"
   ynh_replace_string "__DB_NAME__"  "$db_name"                "../conf/systemd.service"
    ynh_replace_string "__DOMAIN_URI__"      "$domain$path_url"          "../conf/systemd.service"
   ynh_replace_string "__PORT__"     "$port"               "../conf/systemd.service"
   ynh_add_systemd_config
fi

#=================================================
# CHECK THE PATH
#=================================================

# Normalize the URL path syntax
path_url=$(ynh_normalize_url_path $path_url)

#=================================================
# STANDARD UPGRADE STEPS
#=================================================
# DOWNLOAD, CHECK AND UNPACK SOURCE
#=================================================
ynh_print_info "Upgrading source files..."

# Download, check integrity, uncompress and patch the source from app.src
ynh_setup_source "$final_path"

#=================================================
# CREATE DEDICATED USER
#=================================================
ynh_print_info "Making sure dedicated system user exists..."

# Create a dedicated user (if not existing)
ynh_system_user_create $app

#=================================================
# GENERIC FINALIZATION
#=================================================
# SECURE FILES AND DIRECTORIES
#=================================================

# Set permissions on app files
chown -R $app: "$final_path"
chmod -R 640 "$final_path"
find "$final_path" -type d -print0 | xargs -0 chmod 750

#=================================================
# SETUP SSOWAT
#=================================================
ynh_print_info "Upgrading SSOwat configuration..."

# Make app public if necessary
if [ $is_public -eq 1 ]
then
	# unprotected_uris allows SSO credentials to be passed anyway
	ynh_app_setting_set $app unprotected_uris "/"
fi

#=================================================
# RELOAD NGINX
#=================================================
ynh_print_info "Reloading nginx web server..."

systemctl reload nginx

#=================================================
# START SERVICE
#=================================================

ynh_systemd_action --action=restart --service_name=$app --log_path="systemd" --line_match="Kadira: completed instrumenting the app"

#=================================================
# END OF SCRIPT
#=================================================

ynh_print_info "Upgrade of $app completed"